// 单行文本溢出
@mixin single() {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
// 多行文本溢出
@mixin multiple($line: 2) {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: $line;
  overflow: hidden;
  -ms-text-overflow: ellipsis;
  -o-text-overflow: ellipsis;
  text-overflow: ellipsis;
}
// 禁止文本被选择
@mixin user-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
